T-Wayne, "Nasty Freestyle"The rapper's breakthrough hit flies 43-17 in its second week on the Hot 100, with top Streaming and Digital Gainer honors, fueled heavily by user-generated viral Whip dance clips soundtracked by the song. "Nasty" tallied 6.4 million U.S. streams in the week ending April 26, according to Nielsen Music (up 64 percent) and vaults 37-10 on Streaming Songs. (*NSFW language in video, above)

The song sold 82,000 downloads in the tracking week (up 65 percent) and climbs 22-11 on Digital Songs. It was released in mid-March and has earned double-digit percentage sales gains in each of its six weeks on sale.

T-Wayne (real name: Rickey Wayne) garnered an 88 percent gain in mentions of his handle on Twitter in the week ending April 28, according to Next Big Sound. And the phrase "Nasty Freestyle" grabbed a 57 percent lift in mentions, according to Topsy.

David Guetta, "Hey Mama," featuring Nicki Minaj & AfrojackAs the collab tops Hot Dance/Electronic Songs for a second week, it powers 27-19 on the Hot 100. It climbs 13-10 on Digital Songs with a 14 percent increase to 86,000 sold. It's Guetta's first top 10 on Digital Songs since "Titanium," featuring Sia, in 2012.

Meghan Trainor, "Dear Future Husband"Trainor tallies her third top 20 Hot 100 hit, following the eight-week No. 1 "All About That Bass" and No. 4 "Lips Are Movin," as "Husband" ascends 24-20. Her latest bows on Radio Songs (No. 45), up by 17 percent to 27 million in audience.

Nate Ruess, "Nothing Without Love"Ruess makes his Hot 100 debut as a lead soloist, as "Nothing Without Love" begins at No. 77. Helping fuel the song's start: 69-cent sale pricing in the iTunes Store, spurring the sweeping track's 230 percent surge to 31,000 sold. It also holds at its No. 16 high on the Adult Pop Songs airplay chart.

Ruess previously topped the Hot 100 fronting fun. with "We Are Young," featuring Janelle Monae (six weeks at No. 1 in 2012), and as featured on P!nk's "Just Give Me a Reason" (three weeks, 2013). He releases his first solo LP, Grand Romantic, June 16.

OMI, "Cheerleader"As featured in Billboard's "Tomorrow's Hits" spotlight just last week, the European pop/reggae smash enters the Hot 100 at No. 95. The Jamaican-born singer's breakthrough hit bounds by 12 percent to 1.5 million domestic streams.